Respiration monitoring for heart failure using implantable device
First Claim
1. A method comprising:
- detecting a sleep indication in a subject, the sleep indication providing an indication or inference of whether the subject is asleep or awake;
detecting an exercise indication in the subject, the exercise indication providing an indication or inference of whether the subject is active or at rest; and
monitoring respiration of the subject using a respiration monitor, including;
detecting disordered breathing in the subject;
receiving the sleep indication and the exercise indication; and
computing a sleep disordered breathing indication (DBsleep) indicative of disordered breathing occurring when the sleep indication indicates or infers that the subject is asleep, an exercise disordered breathing indication (DBexercise) indicative of disordered breathing occurring when the exercise indication indicates or infers that the subject is active, and a resting awake disordered breathing indication (DBrest) indicative of disordered breathing occurring when the sleep indication indicates or infers that the subject is awake and the exercise indication indicates or infers that the subject is at rest, wherein the monitoring respiration includes computing a combined disordered breathing metric, DBtotal, according to DBtotal=A·
DBsleep+B·
DBexercise+C·
DBrest, wherein A, B, and C are independently specifiable scaling values.
0 Assignments
0 Petitions
Accused Products
Abstract
An implantable respiration monitor can be used to detect disordered breathing or periodic breathing events that can be categorized, such as according to one or more of sleep, exercise, and resting awake states. The categorized frequency of such events can be compared to independently specifiable thresholds, such as to trigger an alert or responsive therapy, or to display one or more trends. The information can also be combined with detection of one or more other congestive heart failure (CHF) symptoms to generate a CHF status indicator or to trigger an alarm or responsive therapy or to display one or more trends. The alert can notify the patient or a caregiver, such as via remote monitoring. The sleep state information can be further categorized according to central sleep apnea (CSA) or obstructive sleep apnea (OSA) events.
40 Citations
20 Claims
-
1. A method comprising:
-
detecting a sleep indication in a subject, the sleep indication providing an indication or inference of whether the subject is asleep or awake; detecting an exercise indication in the subject, the exercise indication providing an indication or inference of whether the subject is active or at rest; and monitoring respiration of the subject using a respiration monitor, including; detecting disordered breathing in the subject; receiving the sleep indication and the exercise indication; and computing a sleep disordered breathing indication (DBsleep) indicative of disordered breathing occurring when the sleep indication indicates or infers that the subject is asleep, an exercise disordered breathing indication (DBexercise) indicative of disordered breathing occurring when the exercise indication indicates or infers that the subject is active, and a resting awake disordered breathing indication (DBrest) indicative of disordered breathing occurring when the sleep indication indicates or infers that the subject is awake and the exercise indication indicates or infers that the subject is at rest, wherein the monitoring respiration includes computing a combined disordered breathing metric, DBtotal, according to DBtotal=A·
DBsleep+B·
DBexercise+C·
DBrest, wherein A, B, and C are independently specifiable scaling values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method comprising:
-
detecting a sleep indication in a subject, the sleep indication providing an indication or inference of whether the subject is asleep or awake; detecting an exercise indication in the subject, the exercise indication providing an indication or inference of whether the subject is active or at rest; detecting disordered breathing in the subject using a respiration monitor, including; receiving the sleep indication and the exercise indication; and computing at least two of;
a sleep disordered breathing indication indicative of disordered breathing occurring when the sleep indication indicates or infers that the subject is asleep, an exercise disordered breathing indication indicative of disordered breathing occurring when the exercise indication indicates or infers that the subject is active, and a resting awake disordered breathing indication indicative of disordered breathing occurring when the sleep indication indicates or infers that the subject is awake and the exercise indication indicates or infers that the subject is at rest; andgenerating an alert in response to at least an abnormal value or a specified increase in at least two of;
the sleep disordered breathing indication, the exercise disordered breathing indication, and the resting awake disordered breathing indication. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification